CN103150063A - LCD (Liquid Crystal Display)-based optical multi-touch equipment - Google Patents
LCD (Liquid Crystal Display)-based optical multi-touch equipment Download PDFInfo
- Publication number
- CN103150063A CN103150063A CN 201310119507 CN201310119507A CN103150063A CN 103150063 A CN103150063 A CN 103150063A CN 201310119507 CN201310119507 CN 201310119507 CN 201310119507 A CN201310119507 A CN 201310119507A CN 103150063 A CN103150063 A CN 103150063A
- Authority
- CN
- China
- Prior art keywords
- touch
- lcd
- optical multi
- front panel
- touch equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Position Input By Displaying (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides LCD (Liquid Crystal Display)-based optical multi-touch equipment, wherein a protection screen is adhered in front of an LCD panel, a diffusion sheet is adhered on the back of the LCD panel, and a front panel is formed by the LCD panel, the protection screen and the diffusion sheet; an infrared source, a backlight light source and a camera array are arranged in the rear of the front panel; and a display driving system, a power supply system and an image processing system are further arranged in the rear of the front panel. Good user experiences such as natural writing with bifeng and thicknesses can be realized by catching images of touch objects such as a finger by cameras in the infrared source; determining distances between the touch objects such as the finger and a touch surface through the analysis of an image recognition system, judging whether the touch objects such as the finger touch the touch surface or not, calculating the contact strength through the deformation generated when the touch objects such as either the finger or a soft pen are in contact with the touch surface, and providing the contact strength for an upper software.
Description
Technical field
The present invention relates to a kind of touch control device, particularly a kind of optical multi-touch equipment based on LCD.
Background technology
Existing multipoint-touch-technology comprises resistance-type, condenser type, and surface acoustic wave, optics frame etc., these technology can coordinate the LCD display device to use, but effective shapes of the dynamics of perception touch-control and touch object all.Simultaneously, resistance-type and capacitive technologies exist touch face fragility or cover glass is excessively thin, the problem of poor durability; The optics frame exists the surface non-pure flat, is unsuitable for the problem that level is used, and the optical profile type multipoint-touch-technology based on projector equipment is also arranged, but it is poor to exist display effect, needs the shortcomings such as maintenance.Therefore, in order to overcome existing multipoint-touch-technology above shortcomings, be necessary to make improvements.
Summary of the invention
The present invention solves the problems of the technologies described above the technical scheme that adopts to be, a kind of optical multi-touch equipment based on LCD is provided, and wherein, adheres to protection screen in LCD panel front, and diffusion sheet is adhered in the back, and the three forms front panel; The front panel rear arranges infrared light supply, back light and camera array; The front panel rear also is provided with display driving system, power-supply system and image processing system.
Above-mentioned a kind of optical multi-touch equipment based on LCD, wherein, a side of described infrared light supply, back light and camera array is installed astigmatism plate, described astigmatism plate both sides installation reflector.
Above-mentioned a kind of optical multi-touch equipment based on LCD, wherein, described protection screen, LCD panel and diffusion sheet three are adhesively fixed by the transparent adhesive tape of refractive index 1.35～1.55.
Above-mentioned a kind of optical multi-touch equipment based on LCD, wherein, described protection screen is selected anti-dazzle tempered glass.
Above-mentioned a kind of optical multi-touch equipment based on LCD, wherein, described anti-dazzle tempered glass thickness is 5mm.
The present invention contrasts prior art and has following beneficial effect:
1, based on LCD, compare the touch-control system of projection, have display effect good, have advantages of Maintenance free.
2, the tempered glass protection screen of the large thickness of assembling, have high durability, can horizontal positioned, be fit to public place, many people, children and the application scenarios widely such as military.
But the touching intensity of the touch objects such as 3 perception fingers, soft pen provides the writing effect that thickness has the true nature of the vigour of style in writing.
4, in the situation of the positions such as palm, wrist, arm contact touch face, still can accurately identify position and the dynamics of finger tip or nib, clearly grasp the intention that embodies the operator.
Description of drawings
Fig. 1 is the structural representation of a kind of optical multi-touch equipment based on LCD provided by the invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of a kind of optical multi-touch equipment based on LCD provided by the invention, is respectively in figure: LCD panel 1, protection screen 2, diffusion sheet 3, infrared light supply 4, camera array 5, reflector 6, astigmatism plate 7, back light 8, display driving system 9, power-supply system 10, image processing system 11.
The invention provides a kind of optical multi-touch equipment based on LCD, consisted of by front panel, rear panel, image identification system 11, display driving system 9 and power-supply system 10 5 major parts.Wherein front panel begins to be followed successively by protection screen 2 from touch face, LCD panel 1, diffusion sheet 3; Be provided with back light 8, infrared light supply 4, camera array 5, astigmatism plate 7, reflector 6 on rear panel; Image identification system 11 is responsible for receiving the data from camera array 5, processing and identification touch control operation; The display that display driving system 9 receives from computing machine drives LCD and shows; Power-supply system 10 is given back light 8, infrared light supply 4 and all other system power supplies.
Front panel comprises:
Protection screen 2: be the thick anti-dazzle tempered glass of 5mm in the present embodiment, in order to provide robust touch face, protection LCD.
LCD panel 1: be the LCD front panel, be responsible for display frame.
Diffusion sheet 3: in order to the light of diffusion from back light system, provide uniform picture.In the present embodiment, the three is that 1.35～1.55 transparent adhesive tape is adhesively fixed with refractive index, to eliminate light unnecessary reflection between the three.
Rear panel comprises:
Back light 8: in the present embodiment, be white LED lamp pearl array, in order to provide display frame required light.Infrared light supply 4: in the present embodiment, be 850nm infrared LED lamp pearl array, wait in order to the illumination finger to touch object, catch for camera.
Camera array 5: in the present embodiment, be 6 camera of infrared-sensitive is waited in order to catch finger the picture that touches object, image identification system is provided.
Astigmatism plate 7: in the present embodiment, choosing has filled astigmatism plate 7, in order to further fuzzy back light, provides more uniform picture.
Reflector 8: in the present embodiment, on 4 of plate facades, choosing has filled reflector 6 in the back, in order to more effectively to be used to the light from back light 8 and infrared light supply 4.
Display driving system 9: in order to receive the display from computing machine, in the present embodiment, be HDMI, VGA or DVI, driving the LCD panel under the cooperation of back light 8, show user interface.
Image identification system 11: the picture that catches in order to receive camera, by analysis, carry out Contact recognition, dynamics identification, elbow filters, large object identification, the most one or more users' operation is converted to the touch-control message that meets its operation intention, offers computing machine.
Power-supply system 10: be back light 8, infrared light supply 4 and the power supply of other electricity consumption devices.
See also Fig. 1, a kind of optical multi-touch equipment based on LCD provided by the invention, in the present embodiment:
Adhere to protection screen 2 in LCD panel 1 front, diffusion sheet 3 is adhered in the back, and the three forms front panel; The front panel rear arranges infrared light supply 4, back light 8 and camera array 5; The front panel rear also is provided with display driving system 9, power-supply system 10 and image processing system 11.Infrared light supply 4 sends infrared light, passes front panel, the irradiation touch objects, and as finger etc., its reflected light passes through front panel again, is that camera catches imaging; Whether image is analyzed via image identification system 11, obtain the touch object distance, contact, the information such as contact dynamics, body form, through intellectual analysis, touch-control message is issued computing machine and operating system.
For realizing optimum efficiency, a side of infrared light supply 4, back light 8 and camera array 5 can be installed astigmatism plate 7, and reflector 6 can be installed in astigmatism plate 7 both sides.
Protection screen 2, LCD panel 1 and diffusion sheet 3 threes are adhesively fixed by the transparent adhesive tape of refractive index 1.35～1.55, and unnecessary reflection when passing through the three to reduce light promotes identification desired signal noise ratio; With deformation and the vibrations that reduce LCD, especially when horizontal positioned and transportation.In addition, protection screen 2 is preferably used anti-dazzle tempered glass, and thickness does not coexist between 1mm to 12mm according to LCD size and application scenarios; Front surface can be done anti-dazzle, and antireflection is processed.
Above-mentioned a plurality of cameras can one or more synchronous workings, and each camera visual field covers the part of touch face, and the visual field stack of all cameras covers whole touch face.The visual field of two cameras can be all or part of overlapping, in the overlapping region, two cam stereo imagings, thus identify more exactly the position of touch objects, to touch identity distance from and touching intensity.
The change of the caused contact area of deformation occurs during touch face in image identification system 11 in contact by touch objects, analyze the touching intensity information that draws.By the analysis to the surface of contact shape, the nothing intention contacts such as palm, arm are fallen in automatic fitration, keep the contact information of finger tip, nib etc., thereby the user who promotes as operations such as writing experiences.For the equipment of horizontal positioned, when being placed on touch face just like the large object such as teacup, file, recognition system automatically switches to table model, shields all touch control operations, avoids user interface by unconscious operation; After large object was taken away, the control mode touch mode that automaticallyes switch back can normally carry out touch control operation.
Front panel and rear panel combination consist of a rectangular parallelepiped, and wherein front panel consists of the upper surface of rectangular parallelepiped; In rear panel, back light 8, infrared light supply 4 and camera display 5 are arranged in the rectangular parallelepiped lower surface, and the above covers and covers reflector 6 on 7, four facades of astigmatism plate.
Although the present invention discloses as above with preferred embodiment; so it is not to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can do a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.
Claims (5)
1. optical multi-touch equipment based on LCD is characterized in that: adhere to protection screen in LCD panel front, diffusion sheet is adhered in the back, and the three forms front panel; The front panel rear arranges infrared light supply, back light and camera array; The front panel rear also is provided with display driving system, power-supply system and image processing system.
2. a kind of optical multi-touch equipment based on LCD according to claim 1, is characterized in that: a side installation astigmatism plate of described infrared light supply, back light and camera array, described astigmatism plate both sides installation reflector.
3. a kind of optical multi-touch equipment based on LCD according to claim 1, it is characterized in that: described protection screen, LCD panel and diffusion sheet three are adhesively fixed by the transparent adhesive tape of refractive index 1.35～1.55.
4. a kind of optical multi-touch equipment based on LCD according to claim 1, it is characterized in that: described protection screen is selected anti-dazzle tempered glass.
5. a kind of optical multi-touch equipment based on LCD according to claim 4, it is characterized in that: described anti-dazzle tempered glass thickness is 5mm.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310119507 CN103150063A (en) | 2013-04-09 | 2013-04-09 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
| CN201410143314.7A CN104102394A (en) | 2013-04-09 | 2014-04-09 | Optical multi-point touch control equipment and method |
| CN201410141290.1A CN104102380A (en) | 2013-04-09 | 2014-04-09 | Touch device and method for realizing force recognition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310119507 CN103150063A (en) | 2013-04-09 | 2013-04-09 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103150063A true CN103150063A (en) | 2013-06-12 |
Family
ID=48548182
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310119507 Pending CN103150063A (en) | 2013-04-09 | 2013-04-09 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
| CN201410141290.1A Pending CN104102380A (en) | 2013-04-09 | 2014-04-09 | Touch device and method for realizing force recognition |
| CN201410143314.7A Pending CN104102394A (en) | 2013-04-09 | 2014-04-09 | Optical multi-point touch control equipment and method |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410141290.1A Pending CN104102380A (en) | 2013-04-09 | 2014-04-09 | Touch device and method for realizing force recognition |
| CN201410143314.7A Pending CN104102394A (en) | 2013-04-09 | 2014-04-09 | Optical multi-point touch control equipment and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN103150063A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104102380A (en) * | 2013-04-09 | 2014-10-15 | 北京紫霄科技有限公司 | Touch device and method for realizing force recognition |
| CN104680162A (en) * | 2015-02-06 | 2015-06-03 | 广东光阵光电科技有限公司 | Surrounding type fingerprint acquisition method and structure thereof |
| CN104978142A (en) * | 2015-06-17 | 2015-10-14 | 华为技术有限公司 | Intelligent wearable equipment and control method for intelligent wearable equipment |
| CN105320358A (en) * | 2014-06-20 | 2016-02-10 | 鸿合科技有限公司 | Touch trace display method and device based on infrared white plate and infrared white plate |
| CN109799635A (en) * | 2019-01-16 | 2019-05-24 | 柳州阜民科技有限公司 | A kind of electronic equipment |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218088B (en) * | 2013-04-28 | 2016-08-10 | 肖衣鉴 | Optical touch display device and optical touch screen |
| CN105738016A (en) * | 2014-12-11 | 2016-07-06 | 上海箩箕技术有限公司 | Finger pressing pressure detection method |
| CN104932760B (en) * | 2015-06-23 | 2018-03-06 | 中国联合网络通信集团有限公司 | Infrared touch control method and device |
| CN106569644A (en) * | 2015-10-10 | 2017-04-19 | 深圳欧菲光科技股份有限公司 | Touch sensing device and touch sensing method |
| CN106205379B (en) * | 2016-08-30 | 2019-05-24 | 苏州佳世达电通有限公司 | Display |
| CN107240178A (en) * | 2017-06-01 | 2017-10-10 | 克立司帝控制系统（上海）有限公司 | Double-certificationsystem system and double-certificationmethod, method and gate inhibition based on image recognition technology |
| CN107527020A (en) * | 2017-07-31 | 2017-12-29 | 广东欧珀移动通信有限公司 | Biometric discrimination method and Related product |
| WO2019027506A1 (en) * | 2017-08-01 | 2019-02-07 | Apple Inc. | Determining sparse versus dense pattern illumination |
| TWI691875B (en) * | 2018-09-07 | 2020-04-21 | 友達光電股份有限公司 | Detection-display device and display module using the same |
| CN110368703A (en) * | 2019-07-12 | 2019-10-25 | 深圳市战音科技有限公司 | A kind of drawing board and the method for forming picture |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8035612B2 (en) * | 2002-05-28 | 2011-10-11 | Intellectual Ventures Holding 67 Llc | Self-contained interactive video display system |
| JP3909603B2 (en) * | 2003-12-19 | 2007-04-25 | シャープ株式会社 | Optical material, optical member, lighting device and display device |
| WO2008128096A2 (en) * | 2007-04-11 | 2008-10-23 | Next Holdings, Inc. | Touch screen system with hover and click input methods |
| KR101493840B1 (en) * | 2008-03-14 | 2015-02-17 | 삼성디스플레이 주식회사 | Liquid crystal display, display system and method for recognizing shape of object using the liquid crystal display |
| CN101285952A (en) * | 2008-06-12 | 2008-10-15 | 北京汇冠新技术有限公司 | LCD module group embodying touch detection device |
| CN101403952B (en) * | 2008-11-10 | 2010-08-11 | 成都市华为赛门铁克科技有限公司 | Method and apparatus for acquiring touch screen induction information |
| CN101945228A (en) * | 2009-07-08 | 2011-01-12 | 张海宏 | Table body surface liquid crystal display TV and device realizing multiple identification |
| TWI498786B (en) * | 2009-08-24 | 2015-09-01 | Semiconductor Energy Lab | Touch sensor and method for driving the same and display device |
| US8588530B2 (en) * | 2010-07-15 | 2013-11-19 | Samsung Techwin Co., Ltd. | Method and camera for detecting a region having a specific shape |
| KR101131768B1 (en) * | 2011-09-06 | 2012-04-05 | 주식회사 알엔웨어 | Multi touch screen for high speed sampling |
| CN102799318B (en) * | 2012-08-13 | 2015-07-29 | 深圳先进技术研究院 | A kind of man-machine interaction method based on binocular stereo vision and system |
| CN103019477A (en) * | 2012-12-14 | 2013-04-03 | 山东龙视天下传媒集团有限公司 | Indoor wireless audio-video holographic interaction back projection all-in-one machine and realization method |
| CN103164086B (en) * | 2013-03-15 | 2016-05-25 | 创维光电科技(深圳)有限公司 | A kind of touch display methods, device and infrared touch panel based on infrared touch panel |
| CN203414922U (en) * | 2013-04-09 | 2014-01-29 | 北京紫霄科技有限公司 | Optical multi-point touch control equipment based on LCD (liquid crystal display) |
| CN103150063A (en) * | 2013-04-09 | 2013-06-12 | 北京紫霄科技有限公司 | LCD (Liquid Crystal Display)-based optical multi-touch equipment |
-
2013
- 2013-04-09 CN CN 201310119507 patent/CN103150063A/en active Pending
-
2014
- 2014-04-09 CN CN201410141290.1A patent/CN104102380A/en active Pending
- 2014-04-09 CN CN201410143314.7A patent/CN104102394A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104102380A (en) * | 2013-04-09 | 2014-10-15 | 北京紫霄科技有限公司 | Touch device and method for realizing force recognition |
| CN104102394A (en) * | 2013-04-09 | 2014-10-15 | 北京紫霄科技有限公司 | Optical multi-point touch control equipment and method |
| CN105320358A (en) * | 2014-06-20 | 2016-02-10 | 鸿合科技有限公司 | Touch trace display method and device based on infrared white plate and infrared white plate |
| CN104680162A (en) * | 2015-02-06 | 2015-06-03 | 广东光阵光电科技有限公司 | Surrounding type fingerprint acquisition method and structure thereof |
| CN104680162B (en) * | 2015-02-06 | 2018-11-23 | 广东光阵光电科技有限公司 | Circulating type fingerprint collecting method and its construction |
| CN104978142A (en) * | 2015-06-17 | 2015-10-14 | 华为技术有限公司 | Intelligent wearable equipment and control method for intelligent wearable equipment |
| CN104978142B (en) * | 2015-06-17 | 2018-07-31 | 华为技术有限公司 | A kind of control method of intelligent wearable device and intelligent wearable device |
| US11068025B2 (en) | 2015-06-17 | 2021-07-20 | Huawei Technologies Co., Ltd. | Smart wearable device and control method for smart wearable device |
| CN109799635A (en) * | 2019-01-16 | 2019-05-24 | 柳州阜民科技有限公司 | A kind of electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104102380A (en) | 2014-10-15 |
| CN104102394A (en) | 2014-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103150063A (en) | LCD (Liquid Crystal Display)-based optical multi-touch equipment | |
| US8581852B2 (en) | Fingertip detection for camera based multi-touch systems | |
| WO2020077506A1 (en) | Fingerprint recognition method and apparatus and terminal device with fingerprint recognition function | |
| US20110050650A1 (en) | Interactive input system with improved signal-to-noise ratio (snr) and image capture method | |
| CN101231450B (en) | Multipoint and object touch panel arrangement as well as multipoint touch orientation method | |
| JP5346081B2 (en) | Multi-touch touch screen with pen tracking | |
| JP5411265B2 (en) | Multi-touch touch screen with pen tracking | |
| US9262016B2 (en) | Gesture recognition method and interactive input system employing same | |
| US20130222353A1 (en) | Prism illumination-optic | |
| TWI571769B (en) | Contactless input device and method | |
| US10019115B2 (en) | Method and apparatus for contactlessly detecting indicated position on reproduced image | |
| CN201191355Y (en) | Multi-point object touch screen apparatus | |
| CN108846371A (en) | Display device and fingerprint identification method thereof | |
| US20180188890A1 (en) | Electronic whiteboard system and electronic whiteboard and operation method thereof | |
| CN205028278U (en) | Interactive display device of rear -projection formula | |
| CN203414922U (en) | Optical multi-point touch control equipment based on LCD (liquid crystal display) | |
| CN109726650B (en) | Display screen, electronic equipment and fingerprint processing method | |
| GB201200898D0 (en) | Head-mounted system for image pick-up, analysis and display and display method | |
| CA2885950A1 (en) | Interactive input system and method for grouping graphical objects | |
| CN206193742U (en) | Touch sensor exposes type touch -control district and writes district integral type whiteboard with pen | |
| CN105278760B (en) | Optical touch system | |
| CN103019475A (en) | Novel man-machine interaction system | |
| CN206178752U (en) | Touch sensor caves in, and type touch -control is distinguished and district integral type whiteboard is write to pen | |
| CN201322920Y (en) | Simple large screen multipoint touch positioner | |
| CN201955766U (en) | Novel optical electronic whiteboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130612 |